Machine for turning irregular forms



(No Model.) 6 sheets-Sheet 1.

J. E. KIMBALL. MACHINE FOR TURNING IRREGULAR FORMS. No. 646,160.Patented Sept. .10, 1895.

N Q g Q 6 Sheets-Sheet 2.

(-No Model.)

B KIMBALLL MAGHINE FOR TURNING IRREGULAR FORMS.

Patented Sept 10, 1895.

T c pv (No Model.) s Sheets-Sheet 3.

J. E. KIMBALL. MACHINE FOR TURNING IRREGULAR FORMS.

N0.'546,l60. Patented Sept. 10,1895.

(5. JM W hard-6507718 Pumumo. WASP (No Model.) 6 Sheets-Sheet 4.

J. E. KIMBALL. MACHINE FOR TURNING IRREGULAR FORMS. No. 546,160.Patented Sept. 10, 1895;

AN DREW LGRAHAM PHUTOUTHOYWASHIKGTON. RC

(No Model.) 6 Sheets-Sheet 5.

J. E. KIMBALL. MACHINE FOR TURNING IRREGULAR FORMS.

No. 546,160. Patented Sept. 10, 1895.

WITNESSES v INVENTOH ATTORNEY.

(No Model.) 6 Sheets-Sheet 6.

J. B. KIMBALL. MACHINE FOR TURNING IRREGULAR FORMS.

Patented Sept. 10, 1895.

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Human "Frames PATENT @rrrcn.

JOSEPH E. KIMBALL, OF ABINGTON, MASSACHUSETTS.

MACHINE FOR TURNING lRREGULAR FORMS.

SPECIFICATION forming part of Letters Patent No. 546,160, datedSeptember 10, 189 5. A plication mime 17,1893. Serial nausea (No model.)

To all whom, it may concern:

Be it known that I, JOSEPH E. KIMBALL, of Abington, in the county ofPlymouth and State of Massachusetts, have invented an Improved Machinefor Turning Irregular Forms, of which the following is a specification.

The invention is herein described as embodied in a machine forturninglasts, although it will be obvious that the invention is notlimited to such specific form or purpose.

The main features of machines of this class are-a model and blockrotating in line upon a swinging frame and a model-guide and cuttertraveling with relation to the model and block, with the model incontact with the guide and the cuttercutting away the surplus materialof the block, so that the varying con tour of the model will vibrate theframe to feed more or less of the block to the cutter and thus shape theblock on the lines of the model.

The main object of my invention is to produce a machine of this class inwhich the motion of the carriage to cause the guide to do its work inconnection with the model and the cutter to do its work inconnection'with the block is automatically stopped at the desired time,the guide and model and the cutter and block are automaticallyseparated,

the model and block automaticallystopped with the model in the desiredposition, and the carriage automatically moved back ready for a secondoperation.

The main feature of myinventiou consists in the combination in a machineof this class of automatic mechanism for stopping the operation of thecutter on the block at the desired time, for stopping the rotation ofthe model and block, with the model in the desired position, and forcarrying the parts back to their starting-point.

Other features of my invention relate to im portant matters ofconstruction by which the quality of the work is improved and themachine is made more durable and efficieut.

It will be obvious that the guide and cutter may be moved toward andaway from the axis of the model and block, and that the model and blockmay be moved past the guide and cutter; but in practice it is better tomount the head-stocks and tail-stocks of the model and block in aswinging frame and to mount of the model; but when an article longer orshorter than the model is to he turned two carriages must of course beused, for the reason that one must have a longer or shorter travel thanthe other.

In the accompanying drawings, forming a part of this specification,Figure l is a front elevation of my improved machine; Fig. 2, an endview looking from the left of Fig. 1. Fig. 3 is a top plan; Fig. l, apartial plan view showing the shipper and the mechanism for returningthe carriages; Fig. 5, a detail partly in section on line 5 5 of Fig. 4,showing the devices for actuating the shipper. Fig. 5 is a verticalsection on line 5 5 of Fig. 4, but more complete than Fig. 5. Fig. 6 isa detail on line 6 6 of Fig. 1 of the mechanism for reversing therevolution of the model, showing the gear 0 driven by pinion 0 throughpinion c. Fig. 6 is a similar view to Fig. 6 showing 0 driven directlyby 0 0 being out of mesh with c. Fig. 7 is a partial end View of themachine looking from the right of Fig. 1, showing the devices forretaining the frame away from the guide and cutter and for stopping thecarriage-feed and the mechanism that rotates the model and block. Fig. 8is a detail on line 8 8 of Fig. 1, and Fig. 9 is a detail of the devicefor stopping the return movement of the carriages.

In the drawings the swinging frame ct is composed of standards a a andcross-pieces a at, which are supports for the stocks I) b b If. Thestandards a, a are supported at a a at the base of the machine and areconnected by rods a a. with the arms a a. of a rocker-shaft a by whichthe frame is braced. A spring 0, tends to pull the frame inwardly. Thehead-stocks l) 12 support shaft 0, which drives gears 0 0 secured onspindles 0 0 which revolve the block 1 and model 2. The axis of theblock and the axis of the model must be in line; but the dogs or centerswhich support the model must be rotated in some cases in same directionas the dogs or centers which support the block, and in other cases inthe opposite direction, in order that the machine may turn rights andlofts from the same model. This is accomplished by the gears c 0 whichmesh with pinions on shaft 0, and when pinion c meshes with gear 0 thespindles c c" and block 1 and model 2 revolve in the same direction.Pinion a (see Figs. 2, 6, and G is splined on shaft 0, and pinion c isloose on a stud o supported by the head stock I). Lever 0 is fulcrumedon pin 0, secured upon the cross-piece a and is connected with straps 0c, jaws on which engage the pinions c (2, so that when the end of leverc is moved to the left it will cause pinion c to mesh with gear 0' andpinion c to unmesh with gear 0, and 0 will then be driven directly bypinion 0"; but when lever 0 is moved back pinion 0 will mesh with gear0' and also with pinion c and thus the motion of 0 will be reversed toproduce a right last from a left model, or vice versa. This is also afeature of my invention, for although the pinions c c are not new withme I am the first to connect them by mechanism, so that the act ofmoving one into gear with 0' moves the other out ofgear with 0, therebygreatly facilitating and making cer tain the operation of setting themachine to turn a right or a left.

Upon the bed of the machine are tracks d (1 upon which slides themodel-carriage (1, provided with elongations (Z cl", upon which aretracks d d", on which the cutter-carriage e is mounted. Upright d oncarriage (Z carries the support (i which is movable in ways on theupright (1 the support d carrying the guide-wheel (1. Spring (Z isconnected to support d and upright (1 A projection (Z is secured upon athreaded spindle (Z which is connected by a universal-joint 01 with acrank d, by which the projection d is moved vertically. The projection(Z is held by spring (Z in engagement with a fan-boardf, mounted uponuprights f and connected by rodf with the frame a. The projection (Z canthus be moved toward and from the axis of fan-board fto vary the throwof support d and consequently limit the movement of the frame co tobring the axis of the block nearer to or farther from the cutter, andthus make the last larger or smallerthan the model in directions atright angles to the axis.

The cutter-carriage e supports the uprights e e on which the cutter eand pulley c are mounted. The cutter-carriage c has a movementindependent of the model-carriage by means of an adjustable link 6connected to cutter-carriage e at e and connected to sliding block 0 onlever 6 the lever being pro vided with a movable fulcrum e and connectedto the model-carriage d, all as usual. The lever bears a graduated scalea, and pointer e on block 0' can be secured by clamp e at the desiredadjustment to vary the length of travel of carriage e to make a lastwhich is longer or shorter than the model.

Upon the under side of carriage cl is a rack (Z which is engaged byapinion (Z fixed on shaft 01 upon which is also the gear 1:6 driven byworm g on shaft g. Shaft g is journaled at one end on a slide and at theother end in a movable bearing A red g slides in a groove in the frontof the machine and has a tooth 9 which engages a notch in the slide g Apin g on guide-carriage (l strikes a projection g on the rod 9 when thecarriage has reached the limit of its travel and releases the slide 9which drops down, aided by spring 9 and thus separates the worm andgear. (The slide can be raised by lever g and the tooth g will thenre-engage the slot by the pull of spring g Shaft g is driven by shaft h,which also drives shaft 0 through belt h. Shaft la is driven throughclutch 7L2 by shaft 7t, which is in turn driven by main shaft m, uponwhich is the drum m, which drives cutter Shaft 7.; is driven throughpulleys m m on shaft in and belts m m and pulleys on shaft 7t, pulleys7; k being fast and pulleys 7 7& loose on shaft it. A shipper n isfulcrumed at it upon a bracket 11 and is connected at n with lever or,also fulcru med on-bracket 11 A pin 91 on lever 77, is acted upon by afinger it on rod 11 adjustably secured on the bottom of part d ofcarriage d, so that as the carriage (5 moves to the left lever 71 ispushed over until engaged and held by lever a and the belts m m shiftedfrom pulleys 70 7a to pulleys if k and the speed of shaft 70 therebydiminished, thus causing the carriages to move slowly and the model andblock to rotate at a less speed while the cutter is forming the comb orinstep part of the last. The finger n 'slides over the incline n onlever 01, and at the proper moment the collar 72 strikes lever n andreleases lever 41 and the belts are returned to the pulleys k 71: byspring 7t and shaft k resumes its normal speed.

The devices for automatically returning the carriage are as follows: Anarm a is secured on the standard a and carries cam-roll a ot' cam 0,which is supported loosely upon shaft 0, one member 0 of a clutch beingsecured to the cam 0', the other member 0 splined on the shaft 0 andseparated from member 0 by spring 0. A forked arm 0 embraces clutch 0and is acted upon by the adjustable tripper 0 to operate the clutch.Shaft o is continuously driven through bevel gears o 0 by shaft 19,which is in turn driven by gear :0 and worm w on shaft 7t. Shaftp issuitably supported from the bed of the machine and connects with clutchmember 1) on shaft d, the other member 19 of that clutch being splinedon shaft 19. Bockenshaft r is provided on one end with an arm 9*, whichis engaged by the roll 19 on cam o, and is also provided with a forkedarm r for the clutch member 13 A tripperaadjustably securedon support 5,fast to the carriage d, engages the forked arm 7' at the proper momentand separates the clutch, in order to stop the return movement. hen theframe a is swung forward away from the guide and, cutter by IIO camacting on arm a shaft h is stopped automatically by a rod 3 detachablyconnected at one end to the frame a, and at the other end to a lever 5,connected with a rod 87, having at its outer enda wedge .9 which actsupon lever s to separate clutch h and stop-shaft h. when the frames hasswung forward the required distance, the projection t on rod 6 engagesthe frame andprevents its return until latch it has been raised. Themodel must be stopped always in one position namely, with the comb ofthe model uppermost and to insure thisl provide an upright y supportingone end of link 3 the other end embracing the model-spindle. Aspringlatch slides in the link and has a tooth 1 which engages a recessin the spindle and is pressed into engagement with the slot by a spring3 when the frame a is swung outward, so that the rotation of the modelis stopped with the comb uppermost. This stopping of the model alwaysinthe desired position has never before been accomplished in any machineof this class and is an essential feature of my invention, for thereason that it is necessary before shifting the gear 0 to bring it intoor out of mesh with the gear 0, that the relation of gears c and a shallbe such that the dogs on spindles and c are parallel when a is shifted.Moreover, it is practically essential that the dogs on the spindles oand 0 shall always be parallel when the the rotation of the model andblock is automatically stopped, in order to prevent imperfect work fromfalse setting of a fresh block. Cross-piece a Fig. 8, is provided with aledge a, which projects over the top of stocks Z) Z) 12 b and preventsdust entering the bearing-surface a". This is especially important withregard to the tail-stocks 1) b which must be frequently adjusted andalways kept true,

The operation of the machine is as follows: The model and block areplaced in position while the frame is held out by the latch t t and thecarriages d and e are at the startingpoint. Rod is raised and the frameswings forward until the model and block are in contact with the guideand cutter, the latter being constantly rotated by shaft m. As the frameswings forward, the levers s s 5 cause wedge 3 to release lever s andthereby close clutch 71F, and shaft 71. is started and the model andblock revolved. Lever is then depressed and the worm g engaged with geard starting the carriage (Z. As the carriages move to the left, the blockis shaped to correspond with the model, and as the guide approaches thecomb of the model shipper it moves belt m from loose pulley 7a to fastpulley 70 and belt at upon the loose pulley 10 from fast pulley it, sothat the carriages move more slowly and the model and block rotate at aless speed. when the comb is passed, lever n is tripped by dog it andthe belts are returned to their first position by spring 71 When thecarriage (Z reaches the end of its travel toward the left, pin g on partd of carriage (Z strikes projection g and moves slide 9 to release slideg which is forced down by its spring g to separate worm g and gear (Zand stop the carriage-feed; but a moment before the dog 0, actingthrough the usual forked lever'o throws clutch member 0 into engagementwith o to rotate cam 0, which hangs by gravity with rollp in a ver ticalline with the axis of the cam, when 0 and 0 are disengaged. As cam 0'turns, the cam-surface o engages the arm a, and forces frame a away fromthe guide and cutter and the tooth y engages the notch in spindle c andstops the rotation of the model and last at their proper positions, andthe frame is held by latch 75 75. At the same time the clutch h isthrown out by lever s and wedge 5 stopping shaft 0. As cam o continuesto revolve, the roll P engages arm 7", which rocks shaft 4" to engageclutch members 23 and p and thereby rotate pinion cl" in the oppositedirection and return the carriages. On the return movement the forkedarm r is struck by tripper s on carriage d, unclutchingp' and p and thecarriages come to rest. Clutch 0 o is disengaged by spring 0 as carriaged moves away from it and cam 0' resumes its normal position. When theframe a is held out by the latch t, the operator removes the last andreplaces it by a block, releases latch ft and after allowing frame a toswing into place depresses lever g to lift slide 9 and bring worm g intogear and start the carriage.

The main advantage embodied in myimproved machine is the combination ofa model and block whose axes are in line with a cutter and guide bymeans of automatic mechanism for giving a relative motion to the modeland block and the cutter and guide in a direction to cause the surfaceof the model to act with the guide and the surface of the block to beacted on by the cutter and to cause the model and block to be separatedfrom the cutter and guide and the motion of the model to be stopped withthe model always in the required position. Obviously the construction ofthe automatic mechanism, which I have shown as giving a rotary motion tothe model and block on the same axial line and a motion of the cutterand guide parallel with the axial line of the model and block, andasidewise motion of the model and block toward and from the cutter andguide while the cutter is acting to remove the surplus material from theblock, and a further sidewise motion of the model and block away fromthe cutter and guide after the block is stopped, may be widely varied,and While the mechanisms described for imparting these various motionsautomatically are those I prefer, yet the principle of my invention isthe automatic stopping of the model and block with the model always inthe required position, when the model and block rotate on axis in thesame line, and are automatically governed in their relation to the guideand cutter, as above described. Moreover, I am the first to devisemachine in which all the motions of model and block on the same axialline With relation to a guide and cutter are automatic, and while thishas been done in machines for turning certain ir regular forms, (see,for example, patents to Kromer, No. 422,809, dated March 45,1800, and toIloopes, No. 372,796, dated November 8, 1887) yet my improved machine isthe first Wholly automatic machine adapted for that class of Work inwhich the axis of the model must always be in the same line on the axisof the block.

What I claim as my invention is 1. In combination a model and bleol; onthe same axial line; a guide and cutter; a carriage for giving therelative motions e'nd Wise; a frame for giving the relative motionssidewise; and automatic mechanism for moving the carriage, stopping themotion of the carriage in one direction, separating the model and blockfrom the guide and cutter, and stopping the rotary motion of the modeland block with the model always in the required position all combinedand operating substantially as and for the purposes specified 2. In amachine for turning irregular forms a carriage, a rack and pinion,direct and reverse motion devices for the pinion, a cam normally out ofaction, a clutch controlling that cam, a tripper carried by the carriageto operate the clutch controlling the cam, a second clutch operated bythe cam and when in gear reversing the motion of the pinion and a secondtripper carried by the carriage to open the second clutch, when thecarriage reaches the end of its return stroke, all combined andoperating to move the carriage in one direction, automatically stop itsmotion at a desired point, connect the pinion With its reverse motiondevices, and stop the carriage at the end of its return stroke,substantially as set forth.

In a machine for turning irregular forms the combination of the model,its driving gear pinions c and a, lever c and connections c 0 to reversethe motion of gear 0 by a single motion of lever 0 all substantially asdescribed.

4. In combination a model and block on the same axialline; a guide andcutter; a carriage for giving the relative motions endWise; a frame forgiving the relative motions siderise; automatic stop mechanism forcontrolling the carriage and governing the last block; and automaticmechanism for moving the carriage endwise in both directions, andseparating the model and block from the guide and cutter; all combinedand operating to make the automatic machine above described.

JOSEPII E. KIMBALL lVitnesses:

JONATHAN CILLEY. Jenn R. Snow.

